Gabel, Robert A. Signals and linear systems [Book] / Robert A. Gabel, Richard A. Roberts. - 3rd ed. - New York : Wiley, c1987. - xvii, 470 p. ; 25 cm. Includes index. All. ISBN: 0471825131 Subjects--Topical Terms: Electric network analysis.Linear systems. Dewey Class. No.: 620.72